var fasoon = fasoon || {};

(function (ns, $) {
    "use strict";

    ns.QuotePriceStep5 = function () {
        this.construct.apply(this, arguments);
    };

    var proto = ns.QuotePriceStep5.prototype;

    proto.construct = function (options) {
        this.options = $.extend({
            form_id: undefined,
            shares_number_id: undefined,
            equity_capital_id: undefined,
            share_price_id: undefined,
            share_text: {},
            currency: 'CHF'
        }, options);

        this.form = $('#' + this.options.form_id);
        if (!this.form.length) {
            alert('Form #' + this.options.form_id + ' is not found.');
            return;
        }

        this.shares_number = $('#' + this.options.shares_number_id, this.form);
        if (this.shares_number.length) {
            this.equity_capital = $('#' + this.options.equity_capital_id, this.form);
            this.share_price =  $('#' + this.options.share_price_id, this.form);
            if (this.equity_capital.length && this.share_price.length) {
                this.equity_capital.on('change', $.proxy(this.calculate_shares_number, this));
                this.share_price.on('change', $.proxy(this.calculate_shares_number, this));
                this.calculate_shares_number();
            }
        }

        $('.price', this.form).autoNumeric(
            'init',
            {
                /*mRound: this.options.currency,*/
                aSign: this.options.currency + ' ',
                pSign: 'p',
                aSep: "'",
                lZero: 'deny',
                vMin: 0.00,
                vMax: 999999999.99,
                mDec: 2
            }
        ).on('focus', function () { this.setSelectionRange(4, this.value.length); });

        $('.number', this.form).autoNumeric(
            'init',
            {
                aSep: "'",
                lZero: 'deny',
                vMin: '1',
                vMax: '999999999.99',
                mDec: 0
            }
        ).on('focus', function () { this.setSelectionRange(0, this.value.length); });
    };

    proto.calculate_shares_number = function () {
        var shares_number = '';

        var capital = this.equity_capital.val();
        capital = parseFloat(capital.replace(/[^.0-9]+/g, ''));

        var price = this.share_price.val();
        price = parseFloat(price.replace(/[^.0-9]+/g, ''));

        if (!isNaN(capital) && !isNaN(price) && capital >= price) {
            shares_number = parseInt( Math.ceil( capital / price ) );
        }

        var text_key = 'plural';
        if (shares_number == 1) {
            text_key = 'singular';
        }
        this.shares_number.val(this.format(shares_number, 0, "'") + ' ' + this.options.share_text[text_key]);
    };

    proto.format = function(n, decPlaces, thouSeparator, decSeparator) {
        var decPlaces = isNaN(decPlaces = Math.abs(decPlaces)) ? 2 : decPlaces,
            decSeparator = decSeparator == undefined ? "." : decSeparator,
            thouSeparator = thouSeparator == undefined ? "," : thouSeparator,
            sign = n < 0 ? "-" : "",
            i = parseInt(n = Math.abs(+n || 0).toFixed(decPlaces)) + "",
            j = (j = i.length) > 3 ? j % 3 : 0;
        return sign + (j ? i.substr(0, j) + thouSeparator : "") + i.substr(j).replace(/(\d{3})(?=\d)/g, "$1" + thouSeparator) + (decPlaces ? decSeparator + Math.abs(n - i).toFixed(decPlaces).slice(2) : "");
    };
})(fasoon, jQuery);